Well-drill.



A. C. MILLER.

WELL DRILL. APPLICATION FILED FEB. I5, |917;

Patented Oct. 30', 1917.

.L u fL/l////// WITNESS annee. MILLER,- onK-mvsns oI'rY, MIssoUnI,AssIGN'on or cnn-ro J., sonannnor Kansas oI'rY, MISSOURI.

IIRTII 'ro FRANK WELL-DRILL.

metisse, i

To (MZ whom t may' concern:

Beit known that I, ANNA C. MILLER, aA

citizen of the United' States, residingat KansasCity, inthe county of Jackson and State of Missouri, have invented a certain new and useful Improvement in fell-Drills, of Vwhich the following is aspeciflcation.

My invention relates'to improvements in well drills. i The object of my inventi-on is to provide a well drill which does notv require to be removed during the drilling operation forthe removal of the cuttings produced bythe drill'bit. Y lvlyinvention further'fprovides adrill bit having a longitudinal discharge passage .1n

which is `located an g upwardlyV opening,` check valve, whereby the cuttingsmay: be continuously discharged upwardlythrough the bit and heldf by the check valve from falling .v back. i

VThe novel features of'my` invention, are

hereinafter fully described and claimed.`

In the accompanying drawing, which illustrates lthe preferred embodiment of my invention,pFigure lis Va view partly yin vertical section, partly broken away .and partly in elevation of my improvement as applied to a vertically Yreci'procativev rotatable well drill. f

Fig. 2 is a vertical Sectional view on the line 2 2 of Fig. 1. A

Fig.v 3 is a bottom view of the bit.

Similar reference characters designate similar parts in the different views.

1 designates the body of my improved bit, the lower portion of the bit being Sashaped in cross section, the arms of the S forming longitudinal blades 2, which are provided each with a longitudinal cutting edge 3,

- by which, when the bit is rotated, cuts the earth to form a round hole. The arms or blades 2, with the body form two longitudinal channels t at opposite sidesl respectively ofthe body.

The upper part of the body l is provided with a vcentral longitudinal discharge pas# sage 5 having two branches 6 whichrespectively communicate with the upper ends of the channels 4.

The upper end of the passage 5 forms a valve seat 7 in which is seated an upwardly opening check valve, preferably comprising a ball 8. n

9 designates a tubular shaft having a specification of Letters raient.

'Patenftd'OC-Bo? '1917? Application filed February 15, 1917. Serial No. 148,864.

screwithreaded lowerfend fitted to the screw Y threaded upper end of the bit l. The shaft isj preferablyr composed ofL tubing having a laterally turned upper discharge end 10 dis# posed above thesurface of the ground.

To the upper end=--of1r the tubing 9 is at-r tached the lower endof. a bar 11 to which isk attached any ordinaryftype of mechanism, v not shown, adapted to vertically reciprocate the `'bit l and shaft 9 are'dropped, the lower edge of ytheS--Shaped body, whichfisa cut ting edgefwill cutinto the rock-or earth, .and

the Vcuttings will enterfthe channels yIf water be now poured into the well at the outer sideof the shaft 9,'it will force the cuttings upwardly through thechannels 4,

branches 6,and'passagepast*the valve 8 andintojthe tubingcf). llhef-ball valveI 8i is smaller in diameterthan-the 'inner diameter. f

of the ktubing' 9, vso that vthe dirtand walter will-@readily `pass. the valve.; The latter, on

the downward movement of the `bitk will vbe sol raised by the water and cuttings, and will seat itselff on'k the :upward 'movement of :the bit," thus preventing the dirt whichy has passed above the valve 8 from falling downwardly past the valve. c

The valve is made, preferably, of hardened steel or other suitable material which is heavier than the rock orV dirt which is being drilled.

The bit 1 and tubing 9 are given an axialy turning movement at every downwardmove ment of the bit. The lower sharpened edge of the bit will thus cut a round hole, `and `the cuttings collecting in the hole made by the bit will cut by the blades 2 and will enter the channels 4, and, as already described, the cuttings will then be forced upwardly, by water poured into the well, through the passage 5, past the valve 8, through the tubing 9 and Vwill'be discharged therefrom upon the 'surface of the ground together with the water which has entered the tubing 9 with the cuttings. As shown in the drawing, the body l of the bit tapers upwardly, and the cutting edgesk 3 of the blades are disposed nearer to the longitudinal aXis of the bit than is the peripheryof the bit at its greatest diameter. It will be thisl construction, the water poured into the well will notbe obstructed by the bit at any point, and as the channels are openlaterally their full length and merge into the Haring lower end of the branches, the incoming water will have great force in forcing the material out by the blades through'the channels and into the flaring lower ends of the branches 6. f

lido notliinit my invention to the struc-V ture shown and described, as modiications, within the scope of the appended claims, may be made without departing from the spirit of my invention.

kThat I claim is '1. In a` well drill, a bit having-an upwardly tapering body provided with a 'longitudinal blade having a longitudinal cutting edge, the-blade forming with the body a longitudinal channel which is open laterally its full length, the bodyY having a longitudinal discharge hole, the lower end of which islaring and merges intosaid channel, the body having in said hole a valve seat, and an upwardly opening check valve in said seat. y 1- f f In a well drill, .a bit having alower portion S-shaped in cross section, the arms of' the S being longitudinal blades having longitudinal cutting edges and forming with the body two parallel longitudinal channels which are open laterally their full length, the

bit having a longitudinal discharge hole, the lower kend of which is flaring and merges into one of said chaimels, thebit in said hole having a valve seat, and an upwardly opening check valve in said seat. y

3. ln a well drill, a bit having an upwardly tapering body provided in its upper end with a central longitudinal discharge hole and avalve seat in said hole, the lower end of said hole having two branches provided with downwardly Haring lower ends, the bit having a lower vportion S-shaped in cross section, the arms of the S being longitudinal blades which with the body form two longitudinal channels which are open laterally their full length and which at their upper ends respectively merge into the fiar ing vlower ends of said branches, and an vupwardly opening check valve in said seat.

4. ln a well drill, abit liavingalower portion SK-shaped in cross section, the arms of the S being longitudinal blades having longitudinal cutting edges, the cutting edges being located nearer to the axis of the bit than the greatest diameter ofthe bit, the blades forming .with ythe body two longitudinal channels which are open laterally their whole length, the bit being rvprovided in its upper portion with a longitudinal discharge hole having a downwardly flaring end which merges into one of said channels, the bit being provided in said hole with a valve seat,

and an lupwardly opening check valve in said seat. Y

In testimony whereofy I have signed my' name to thisspecication.

ANNA fo; MILLER. if y lopiesrof this patent may be obtained for ve cents each, by. addressing ythe "Con1missione rlof Patents, v Washington, D. C. i 1` 

